128380720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 346852800

約数和(自身を除く): 218472080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 73, 76, 80, 89, 95, 104, 130, 146, 152, 178, 190, 208, 247, 260, 292, 304, 356, 365, 380, 445, 494, 520, 584, 712, 730, 760, 890, 949, 988, 1040, 1157, 1168, 1235, 1387, 1424, 1460, 1520, 1691, 1780, 1898, 1976, 2314, 2470, 2774, 2920, 3382, 3560, 3796, 3952, 4628, 4745, 4940, 5548, 5785, 5840, 6497, 6764, 6935, 7120, 7592, 8455, 9256, 9490, 9880, 11096, 11570, 12994, 13528, 13870, 15184, 16910, 18031, 18512, 18980, 19760, 21983, 22192, 23140, 25988, 27056, 27740, 32485, 33820, 36062, 37960, 43966, 46280, 51976, 55480, 64970, 67640, 72124, 75920, 84461, 87932, 90155, 92560, 103952, 109915, 110960, 123443, 129940, 135280, 144248, 168922, 175864, 180310, 219830, 246886, 259880, 288496, 337844, 351728, 360620, 422305, 439660, 493772, 519760, 617215, 675688, 721240, 844610, 879320, 987544, 1234430, 1351376, 1442480, 1604759, 1689220, 1758640, 1975088, 2468860, 3209518, 3378440, 4937720, 6419036, 6756880, 8023795, 9875440, 12838072, 16047590, 25676144, 32095180, 64190360, 128380720]

約数ペア:

[(1, 128380720), (2, 64190360), (4, 32095180), (5, 25676144), (8, 16047590), (10, 12838072), (13, 9875440), (16, 8023795), (19, 6756880), (20, 6419036), (26, 4937720), (38, 3378440), (40, 3209518), (52, 2468860), (65, 1975088), (73, 1758640), (76, 1689220), (80, 1604759), (89, 1442480), (95, 1351376), (104, 1234430), (130, 987544), (146, 879320), (152, 844610), (178, 721240), (190, 675688), (208, 617215), (247, 519760), (260, 493772), (292, 439660), (304, 422305), (356, 360620), (365, 351728), (380, 337844), (445, 288496), (494, 259880), (520, 246886), (584, 219830), (712, 180310), (730, 175864), (760, 168922), (890, 144248), (949, 135280), (988, 129940), (1040, 123443), (1157, 110960), (1168, 109915), (1235, 103952), (1387, 92560), (1424, 90155), (1460, 87932), (1520, 84461), (1691, 75920), (1780, 72124), (1898, 67640), (1976, 64970), (2314, 55480), (2470, 51976), (2774, 46280), (2920, 43966), (3382, 37960), (3560, 36062), (3796, 33820), (3952, 32485), (4628, 27740), (4745, 27056), (4940, 25988), (5548, 23140), (5785, 22192), (5840, 21983), (6497, 19760), (6764, 18980), (6935, 18512), (7120, 18031), (7592, 16910), (8455, 15184), (9256, 13870), (9490, 13528), (9880, 12994), (11096, 11570)]